Clutch



1). MACKIE. CLUTCH.

No. 438,077. Patented Oct. '7, 1890.

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- the driving clutch-disk.

NITED STATES DAVID MACKIE, OF PHILADELPHIA, PENNSYLVANIA.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 438,077, dated October'7, 1890.

Application filed January 31, 1890.

To all whom it may concern:

Be it known that I, DAVID MAcKIE, of Philadelphia, in the county ofPhiladelphia and State of Pensylvania, have invented a new and ImprovedClutch, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved clutch forcoupling which is simple and durable in construction, very effective inoperation, and combining a friction and a positive lock in such amannerthat the friction-lock is first employed and the positive lock isbrought into action when the speed of the driven shaft is equal ornearly equal to the speed of the driving-shaft, after which thefrictional contact is broken itnd the positive lock makes a direct coup-The invention consists of certain parts and details and combinations ofthe same, as will be hereinafter more fully described, and then pointedout in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement. Fig.2 is asectional plan view of the same. Fig. 3 is a face view of the drivenclutch-disk. Fig. 4 is a like view of Fig. 5 is a face View Fig. 6 is aside elevation of the same. Fig. 7 is a face viewof the sliding collar.Fig. Sis a plan view of one of the sliding bars. Fig. 9 is an edge viewof one of the levers. Fig. 10 is a plan view of one of the links, andFig. 11 is a face view of one of the plates for the sliding bars.

The driving-shaft A to be coupled to or uncoupled from the driven shaftB is provided with a driving-clutch O, secured on the said shaft A andprovided on its front with toes or teeth 0', adapted to engagecorresponding toes or teeth D, formed on one face of the driven disk D,held to slide on the keys E, fastened on the driven shaft B, so that thesaid clutch-disk D is free to slide on the shaft B and turns the samewhen engaged by the driving clutch-disk O.

The hub of the clutch-diskD is adapted to abut on a collar F, secured onthe driven of the friction-ring.

Serial No. 338,789. (No model.)

is forced into frictional contact with the disk by means of a collarI-I, held to slide on the driving-shaft A, and shifted forward orbackward by the usual shifting fork or lever I, pivoted on a fixed pivotI. The said collar H is also adapted to move the driven clutchdisk Dinto contact by its toes D with the toes O of the driving clutch-disk O.In order to make these connections, the collar H is provided with twolugs H, arranged opposite each other and pivotally connected by links Kwith levers L, fulcrumed on the driving clutch-disk C, and projecting attheir inner ends into the recesses C to engage the backs of the lugs Gof the friction-ring G, so that when the shifting-lever I is moved inthe direction of the arrow a the collar H slides to the right and thelevers L press against the lugs G so as to force the friction-ring G tothe left in frictional contact with the clutchdisk D. When the lever Iis moved back to its former position, the inner ends of the le vers Lengage projections G formed on the said lugs G so as to withdraw thefriction ring G from frictional contact with the clutchdisk D.

The connection of the collar H with the disk D is as follows: Two lugs Hare arranged diametrically opposite each other and at right angles tothe lugs H, as is plainly shown in Fig. 7. The lugs H are pivotallyconnected by the links N with levers 0, also fulcrumed on the drivingclutch-disk G and engaging with their outer ends openings P, formed insliding bars P, held to slide longitudinallyin bearings 0 formed on therim of the drivingclutch disk C. Each of the bars 0 supports a plate Q,adapted to engage the outer face of the disk D, so that when the leverIis moved in the direction of the arrow 1) the collar H slides to theleft and the levers O are swung so as to move the bars P to theright,thereby causing the plates Q to draw the disk D to the right, soas to engage the toes D with the toes O of the driving clutch-disk O.

The operation is as follows: "Whenthe clutch is not in use, it is in theposition shown in Figs. 1 and 2that is, the lever I stands verticallyand the clutch-disks O and D are disengaged, and friction-ring G isdisengaged from the clutch-disk D. Now, when the operator desires tocouple the driving-shaft A with the shaft B to be driven, he first movesthe shifting-lever I in the direction of the arrow a, so as to engagethe friction-ring G with the clutch-disk D, as above described, wherebymotion is transmitted from the driving-shaft A by the said friction-ringG to the clutch-disk D to turn the shaft :8. As the frictional contactbetween the shaft G and the clutch-disk D is gradual, the motion of theshaft B is gradual until it attains about the same speed as thedriving-shaft A. As soon as this takes place, the operator moves theshifting-lever I back to the former position, (shown in Figs. 1 and 2,)at the same time moving the said lever still farther to the right in thedirection of the arrow 1), to slide the disk D to the right into contactby means of its toes D with the toes O of the drivingclutch disk (3. Theshaft A is now positively coupled to the shaft B. It is understood thatthis return movement of the shifting-lever I and the further movement ofthe same in the direction of the arrow 1) takes place as quickly aspossible, so that the disconnecting of the friction-ring G from the diskD and the movement of the latter to couple with the disk 0 takes placein a very short time, and before the shaft B has lost much motion on thedis connecting of the friction-ring G. V

In order to nn'cou lo the shafts A and B, the lever I is moved in theinverse direction of the arrow 12, so that the sliding collar H moves tothe right, and the bars P are slid to the left to free the plates Q fromthe face of the driving-disk D. The operator then continues the movementof the lever I in the direction of the arrow a to move the frictionringG in contact with the disk D, so that the latter is shifted to the left,whereby the toes D are disconnected from the toes O, and the hub of thesaid disk rests or abuts against the fixed-collar F. The operator thenmoves the lever I in the inverse direction of the arrow ct until itstands in the position shown in Figs. 1 and 2, so that the friction-ringG is moved out of contact with the disk D.

It will thus be seen that by operating a single shifting-lever first africtional coupling is made, so as to impart a gradual increasing speedto the shaft to be driven until it attains nearly the speed of thedriving-shaft. Then the frictional contact is broken, and at the sametime the two shafts, which run at nearly the same speed, are coupledtogether without shock or jar by a toe-coupling, so that the coupling ispositive, and all the strain on the shifting-lever is removed.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. A clutch comprising a driving clutch-diskhaving toes and secured on a driving-shaft, a friction-ring held toslide in the said clutchdisk, a driven clutch-disk having toes, and afriction-surface adapted to be engaged by the said friction-ring andadapted to move in contact by its toes with the toes of thedrivingclutch' disk, a sliding collar connected with the saidfriction-ring and with the said driven clutch -disk, and intermediatemechanism, substantially as described, for connecting said collar withthe said ring and with the said driven clutch-disk, as set forth.

2. In a clutch,the combination, with a driving clutch-disk adapted to besecured to the driving-shaft and provided with recesses, of afriction-ring having a conical rim and lugs fitting into'the saidrecesses of the said disk, so as to slide in the latter and turn withthe same, a driven clutch-disk having an annular beveled recess adaptedto be engaged by the conical rim of the said ring, and levers pivoted onthe said driving clutch-disk and engaging the lugs on said friction-ringto move the latter into and out of contact with the driving clutch-disk,substantially as shown and described.

3. In a clutch, the c'ombinatiomwitha driw ing clutch-disk adapted to besecured to the driving-shaft and provided with recesses, of afriction-ring having a conical rim and lugs fitting into the saidrecesses of the said disk, so as to slide in the latter and turn withthe same, a driven clutch-disk having an annular beveled recess adaptedto be engaged by the conical rim of the said ring, levers pivoted on thesaid driving clutch-disk and engaging the lugs on said friction-ring tomove the latter into and out of contact with the driving clutchdisk, anda sliding collar held on the drivingshaft and connected by links withthe said levers, substantially as shown and described.

4:. In a clutch, the combiaiion, with a driving clutch-disk adapted tobe secured to the driving-shaft and having clutch-toes, of bars held toslide longitudinally on the rim of the said driving c'lut'clrdisk andeach carrying a plate, and a driven clutch-disk having toes and adaptedto slide on the shaft to be driven and also adapted to be engaged by thesaid plates, substantially as shown and described.

5. In a clutch, the combination, witha driving clutch-disk adapted to besecured to the driving-shaft and having clutch-toes, of bars held toslide longitudinally on the rim of the said driving clutch-disk and eachcarrying a plate, a driven clutclrdisk having toes and adapted to slideon the shaft to be driven, and also adapted to be engaged by the said 10adapted to slide on the shaft to be driven, and

also adapted to be engaged by the said plates, levers pivoted on thesaid driving clutch-disk for operating the said bars, and a slidingcollar connected by links With the said levers to operate the said bars,substantially as shown 15 and described.

v DAVID MAOKIE. Witnesses:

R. S. REED, R. HAWKINS.

